Reset stats:
To reset the following character's stats, get all unlockables for that character and then enter the corresponding codes at the Main Menu. The stats will be reset to zero and the points will be added to the "Point Get!" pool:

Quest requirements:
Complete the following Quest requirements by performing the corresponding tasks:

Row 1
Use the Y + B attack many times on enemies in a stage.
Clear all rooms of enemies.
Attain Berserk mode many times in a stage.
End a Boss stage in Berserk mode.
Row 2
End a Boss stage with 1 life ticker.
Kill a Boss with a 100% bloody sword.
Do 20 manual combo hits; does not need to hit enemies.
Kill 100 enemies in a row.
Row 3
Finish different stages without taking a hit (not even from Berserk mode).
End all Boss stages very quickly.
Do a long Cool (frame) combo (all hits have white flash and whoosh sound).
Punch hit 10 Mud Zombies without being hit.
Row 4
Achieve a "Violent" combo rank many times in a stage.
Use the X + A attacks many times in a stage (must have three flashing segments).
Enter Berserk mode from Cool (frame) combo hits.
Evade (without attacking) 10 to 30 enemy attacks without being hit.
Row 5
Use evade counter-attack to kill all Bosses.
Kill 100 enemies in Mission 5.
Use the X + A attack for Annna many times in a stage.
Beat Survival mode to stage 18, 36, and 56 (done three separate times).

Clean your sword:
When a sword becomes too bloody it will cause less damage. To increase the damage inflicted by it, clean it.